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Which petrol for a 2.4L MFI
Posted: Wed Feb 15, 2006 4:47 pm
by Garrett
Cringeingly fundamental question: I'm putting Shell Optima ( Irsh brand name, I think its the same in the UK) 94 RON unleaded petrol in my tank, any views on fuel: as is/ +lead additive, which brand etc?
Posted: Wed Feb 15, 2006 5:10 pm
by Nige
94 Ron seems abit low for optima. I'm sure its something like 98 or 99 Ronalds here.
Boggo standard unleaded is 96
I have always had the understanding that unleaded is fine in them apart from really early 356s? The US has had only unleaded since the mid 70s I think, so almost all imported US Porsches will have been running on unleaded.
Posted: Wed Feb 15, 2006 5:19 pm
by willbrown
Porsche originally specified that model '72 onward (MFI) cars should run on 87 octane fuel (kind of hard to come by these days!) You should try and use as low octane as you can because it ignites easier.
You don't need to use lead additives for a '73 S.
Any pics of your car by the way?
Posted: Wed Feb 15, 2006 6:16 pm
by hot66
as Will says , use standard unleaded. The 2.4's were designed to run on crappy low octane USA fuel
Posted: Wed Feb 15, 2006 8:20 pm
by Garrett
Well, as they say on some daft ad or another, that's one less thing to worry about. Cheers for the replies.
Pics:
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Posted: Wed Feb 15, 2006 10:24 pm
by Bertroex
Yup, can only second regarding the octane level: just use standard unleaded.
However, I noticed that with a higher octane my mpg went sligtly up from 27 to 31 mpg and she seemed to run a wee bit quieter. (mix of motorways and fast B roads)
Like the car: ace!
Regards,
bert
Posted: Thu Feb 16, 2006 2:59 am
by Sean
Hi Garrett,
nice car..nice pics. As long as the car isn't spluttering don't waste ur money on any of the fancy fuel (98 oct up).
Where in Cork are u?
Posted: Thu Feb 16, 2006 11:38 pm
by Garrett
Hiya Sean
North side, like. St. Lukes. Give us a shout if in Cork. R U replacing sold 2.2?